In September, Amsterdam typically sees daytime highs of 18.2°C and overnight lows around 10.3°C. Compared to the annual average high of 12.7°C, September runs +5.5°C.
September in Amsterdam averages a daytime high of 18.2°C and an overnight low of 10.3°C.
September runs +5.5°C compared to Amsterdam's annual average high of 12.7°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 18.2°C and cooler evenings around 10.3°C.